How do I select the location for HVAC duct work in a new house?

Question

I have been told that supply should be located on exterior walls and return should be located on interior walls. Is this true and what kind of proximity should they have to one another.

Answer 1

Man, this is a science. Good advice from others so far, but you need to size your duct work, calculate number of runs, distance aprt, etc. That is done by taking into account things like room dimensions, volume, CFMs, total area of glass versus insulated wall or ceiling.

Many good installers have calculators for these things. If all this has been done for you, and you just want to choose the routes for the ductwork, pick the shortest runs to the exterior walls for the supply, and use the innermost walls for the returns. Make sure you put returns both high and low. Choose the shortest path for the return trunks back to the furnace.

If you are doing a small (less than 1000 sq/ft) home in a temperate area, go for it. If this is a 3500 square foot home in Montana or Chicago - get help.

Answer 2

Many HVAC supply companies will take the print of your house and utilize their software to give you what you require. There's a charge involved, but it would be worth it. A heating/cooling system that is poorly designed is almost as annoying as a president that won't flush. There is much more to HVAC systems than just the mere placement of registers and grills. Get some professional advice. Good luck.

Answer 3

you may make certain your conventional area ideally interior the basement. That way ducting can spider from a conventional element.. that's going to shrink the dimensions of your runs and shop air circulate optimal in the process the gadget in the experience that your warmth pump or furnace and AC are sized properly.

Answer 4

yes simply put supply should be under or near window, and near doors, It helps stabilize the temperature. You want the return air as far away as possible, so the supply air is not sucked right back to the air handler, also consider room usage. One supply in a kids room will work, but not in the family room or kitchen

Answer 5

you got to figure the cfm requirements for the square footage, positive pressure vs return, heat gain like windows and heavy use areas. get a professional to draw it up for you, nothing worse than a house that is uncomfortable, good luck

Answer 6

i have sein rhem in the garage in the front & rear side exterior walls

Answer 7

TC is right, can't add a thing